Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

MM: Fachverband Metall- und Materialphysik

MM 32: Topical Session: Defect Phases I

MM 32.3: Vortrag

Mittwoch, 29. März 2023, 16:30–16:45, SCH A 216

Effect of chemical changes on the defect structures in lean rare-earth free ternary Mg alloys — •Wassilios Delis¹, Deborah Neuß², Marcus Hans², Dierk Raabe³, Sandra Korte-Kerzel¹, and Stefanie Sandlöbes-Haut¹ — ¹Institute for Physical Metallurgy and Materials Physics, RWTH Aachen University, Germany — ²Materials Chemistry, RWTH Aachen University, Germany — ³Max-Planck Institut für Eisenforschung, Max-Planck-Straße 1, 40237 Düsseldorf, Germany

Mg is a lightweight structural material with a good specific strength. Unfortunately, it lacks sufficient room temperature formability and therefore a wider commercial use of Mg is hindered. The preferred basal slip and strong basal-type texture were found to be the main reasons for the poor room temperature formability. Alloys containing low amounts of Al and Ca showed a highly increased room temperature ductility. Here, TEM and APT measurements and ab initio calculations showed an increased activity of < c+a > dislocation slip. The effects of the alloying elements are yet not fully understood. Further research has been performed to investigate how the changes in chemistry affect the structure of defects such as boundaries and dislocations.